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Java Java Objects Delivering the MVP Forum

David Valentin
David Valentin
797 Points

I thought I did, but I guess not...any help?

In User.java, add private fields to store firstName and lastName, and initialize them in the provided constructor. Add public getters for firstName and lastName..

I thought I did exactly that. I even reverted to the ' this.' format. But it wont pass...what am I missing.

Help needed for the User.java

Forum.java
public class Forum {
  private String topic;

  // TODO: add a constructor that accepts a topic and sets the private field topic

  public String getTopic() {
    return topic;
  }
public Forum(String topic) {
  mTopic = topic;
}

  /* Uncomment this when you are prompted to do so
  public void addPost(ForumPost post) {
    System.out.printf("A new post in %s topic from %s %s about %s is available",
            topic,
            post.getAuthor().getFirstName(),
            post.getAuthor().getLastName(),
            post.getTitle()
    );
  }
  */

}
User.java
public class User {
 private String firstName;
  private String lastName;

  public User (String firstName, String lastName) {
  mFirstName = firstName;
    mLastName = lastName;
 }
  public String getFirstName () {
    return mFirstName;
  }

  public String getLastName () {
    return mLastName;
  }


}
ForumPost.java
public class ForumPost {
  private User author;
  private String title;
  private String description;

  // TODO: add a constructor that accepts the author, title and description

  public User getAuthor() {
    return author;
  }

  public String getTitle() {
    return title;
  }

  public String getDescription() {
    return description;
  }
}
Main.java
public class Main {

  public static void main(String[] args) {
    System.out.println("Beginning forum example");
    if (args.length < 2) {
      System.out.println("Usage: java Main <first name> <last name>");
      System.err.println("<first name> and <last name> are required");
      System.exit(1);
    }
    /* Uncomment this when prompted
    Forum forum = new Forum("Java");
    // TODO: pass in the first name and last name that are in the args parameter
    User author = new User();
    // TODO: initialize the forum post with the user created above and a title and description of your choice
    ForumPost post = new ForumPost();
    forum.addPost(post);

// */
  }

}

1 Answer

Leandro Botella Penalva
Leandro Botella Penalva
17,618 Points

mFirstName and mLastName variables do not exist in the User class. You need to use the ones you created (the private fields). In the constructor use 'this' to reference them to avoid name collisions.